Zipp’s 858 NSW wheels are now faster than ever thanks to their Total System Efficiency (TSE) technology. This design includes a tubeless hookless rim that reduces weight and creates a smooth fit with the tire. Despite having deep rims the 858 weighs as little as much shallower wheels. Its 23mm internal width is ideal for wider tires run at lower pressures which helps reduce rolling resistance. TSE technology addresses four key speed barriers: wind resistance gravity rolling resistance and vibration. The rim’s unique 82mm depth and patented Sawtooth shape improve aerodynamic performance and stability in crosswinds making it perfect for triathletes time trialists and speed-focused riders. While it’s optimized for tubeless tires it also works with tubeless-ready tires and tubes. It performs best with a 28mm tire and using wider lower-pressure tubeless tires not only increases speed but also smooths the ride helping athletes stay fresher for the run. Disc brakes provide strong reliable stopping power in all weather conditions and the wheel includes Zipp’s high-performance ZR1 SL hubs with ceramic bearings for reliable use.

Zipp’s most advanced and fastest deep-rim wheel for road triathlon and time trialing

UD Carbon hookless rim construction 85mm depth

ZR1 SL disc brake hub with ceramic bearings CX-Ray spokes

TSE for greater efficiency and reduced rolling resistance

Sawtooth rim with Hyperfoil nodes and HexFin ABLC dimple pattern for top aero and crosswind-stability performance with an undulating rim depth

Zipp graphics applied using Zipp’s ImPress direct-print technology

Optimized for 28mm tires compatible with tubeless tires only

Center locking rotor interface. Lockring is included with the wheels

Rim Width (Internal)	23
Front Axle	12mm Thru x 100mm
Valve	Presta
Color	Carbon
Wheel Size	700c
Defined Color	Carbon
ISO Diameter	622 / Road / 29"
Tire Type	Tubeless Ready
Rim Material	Carbon
Hub/Brake Compatibility	Center-Lock Disc